henry

I have a GC 2001 4WD 4.0L. I was wondering if I can measure the fuel pressure myself.
I suspect that the fuel pressure is lost when I turn the car off...because the next time I try to turn it on, it wont start the first time...I can hear the fuel pump when I turn the key to the ON position so it shouldn't be the fuel pump.

Thanks

razor02097

I think the schrader valve to measure fuel pressure is on the fuel rail on all 4.0L, use a fuel pressure gauge usually found at tool supply or auto parts stores to find out your fuel line pressure.


NOTE: be very very careful since you are dealing with fuel under high pressure!

henry

Thanks for your response.
I know that my question might sound stupid bit I don't know where the fuel rail is located. If anybody have a picture of it would be really awesome.

Thanks again for your response.

razor02097

fuel rail is between the throttle body and the valve cover. It is the tube that connects to all the fuel injectors.